package com.maozai.maozaimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.maozai.common.constant.ProductConstant;
import com.maozai.common.to.SkuHasStockVo;
import com.maozai.common.to.SkuReductionTo;
import com.maozai.common.to.SpuBoundsTo;
import com.maozai.common.to.es.SkuEsModel;
import com.maozai.common.utils.R;
import com.maozai.maozaimall.product.entity.*;
import com.maozai.maozaimall.product.feign.CouponFeignService;
import com.maozai.maozaimall.product.feign.SearchFeignService;
import com.maozai.maozaimall.product.feign.WareFeignService;
import com.maozai.maozaimall.product.service.*;
import com.maozai.maozaimall.product.vo.*;
import com.mysql.cj.util.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.maozai.common.utils.PageUtils;
import com.maozai.common.utils.Query;

import com.maozai.maozaimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService productAttrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     *  // TODO 高级部分完善
     *  @GlobalTransactional
     *
     * @param vo
     */

    //seata AT 分布式事务
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1、保存spu基本信息的 `pms_spu_info`
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo, infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);

        //2、保存Spu的描述图片 `pms_spu_info_desc`
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",", decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3、保存Spu图片集 `pms_spu_images`
        List<String> images = vo.getImages();
        spuImagesService.saveImages(infoEntity.getId(), images);

        //4、保存Spu的规格参数 `pms_product_attr_value`
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map((baseAttr) -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(baseAttr.getAttrId());
            AttrEntity byId = attrService.getById(baseAttr.getAttrId());
            valueEntity.setAttrName(byId.getAttrName());
            valueEntity.setAttrValue(baseAttr.getAttrValues());
            valueEntity.setQuickShow(baseAttr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());
            return valueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);
        //5、保存spu的积分信息 `gulimall_sms`->`sms_spu_bounds`
        Bounds bounds = vo.getBounds();
        SpuBoundsTo spuBoundsTo = new SpuBoundsTo();
        BeanUtils.copyProperties(bounds, spuBoundsTo);
        spuBoundsTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundsTo);
        if (r.getCode() != 0) {
            log.error("远程保存spu积分信息失败");
        }
        //5、保存当前spu对应的所有sku信息
        //5.1、sku的基本信息：`pms_sku_info`
        List<Skus> skus = vo.getSkus();
        if (skus != null && skus.size() > 0) {
            skus.forEach(sku -> {
                String defaultImg = "";
                for (Images img : sku.getImages()) {
                    if (img.getDefaultImg() == 1) {
                        defaultImg = img.getImgUrl();
                    }
                }
                //    private String skuName;
                //    private BigDecimal price;
                //    private String skuTitle;
                //    private String skuSubtitle;
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(sku, skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.saveSkuInfo(skuInfoEntity);
                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> imagesEntities = sku.getImages().stream().map(image -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(image.getImgUrl());
                    skuImagesEntity.setDefaultImg(image.getDefaultImg());
                    return skuImagesEntity;
                }).filter((entity) -> {
                    return !StringUtils.isEmptyOrWhitespaceOnly(entity.getImgUrl());
                }).collect(Collectors.toList());
                //5.2、sku的图片信息：`pms_sku_images` //TODO 没有图片路径的无需保存
                skuImagesService.saveBatch(imagesEntities);

                List<Attr> attr = sku.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                //5.3、sku的销售属性信息：`pms_sku_sale_attr_value`
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);
                //5.4、sku的优惠、满减信息：`gulimall_sms`-> `sms_sku_ladder`\`sms_sku_full_reduction`\`sms_member_price`\
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(sku, skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal(0)) == 1) {
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode() != 0) {
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }

    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
        String key = (String) params.get("key");
        if (!StringUtils.isEmptyOrWhitespaceOnly(key)) {
            wrapper.and((w) -> {
                w.eq("id", key).or().like("spu_name", key);
            });
        }
        String status = (String) params.get("status");
        if (!StringUtils.isEmptyOrWhitespaceOnly(status)) {
            wrapper.and((w) -> {
                w.eq("publish_status", status);
            });
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmptyOrWhitespaceOnly(brandId) && !"0".equalsIgnoreCase(brandId)) {
            wrapper.eq("brand_id", brandId);
        }
        String catalogId = (String) params.get("catelogId");
        if (!StringUtils.isEmptyOrWhitespaceOnly(catalogId) && !"0".equalsIgnoreCase(catalogId)) {
            wrapper.eq("catalog_id", catalogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {

        //1 查出当前spuid对应的所有sku信息，品牌的名字。
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());
        //TODO 4 查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = productAttrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        System.out.println(attrIds);
        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);
        //List<SkuEsModel.Attrs> attrs = new ArrayList<>();
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs1);
            return attrs1;
        }).collect(Collectors.toList());
        System.out.println(skuIdList);
        //TODO 1 发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkuHasStock(skuIdList);
            //List<SkuHasStockVo> data = skuHasStock.getData();
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
            };
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e) {
            log.error("库存服务查询异常; 原因{}", e);
        }
        //2 封装sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku, esModel);
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            //设置库存信息
            if (finalStockMap == null) {
                esModel.setHasStock(false);
            }else {
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }
            //TODO 2 热度评分。 0
            esModel.setHotScore(0L);
            //TODO 3 查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());
            //设置检索属性
            esModel.setAttrs(attrsList);
            return esModel;
        }).collect(Collectors.toList());

        //TODO 5 将数据发送给es进行保存：gulimall-search;
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode() == 0) {
            //远程调用成功
            //TODO 6 修改当前spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            //远程调用失败
            //TODO 7 重复调用问题？接口幂等性；重试机制？

            //Feign调用流程
            /**1 构造请求数据，将对象转为json
             *      RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2 发送请求进行执行(执行成功会解码响应数据)
             *      executeAndDecode(template)
             * 3 执行请求会有重试机制
             *      while(true) {
             *          try {
             *              executeAndDecode(template);
             *          }catch() {
             *              try {
             *                  retryer.continueOrPropagate(e);
             *              }catch() {
             *                  throw ex;
             *              }
             *              continue;
             *          }
             *      }
             *
             */

        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();
        SpuInfoEntity spuInfoEntity = getById(spuId);
        return spuInfoEntity;
    }


}